Cobalt π-cations in carbocyclic ring constructions |
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| Authors: | G. Bryon Gill Gerald Pattenden Graeme A. Roan |
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| Affiliation: | Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, UK |
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| Abstract: | In a combination of cobalt-mediated cationic and free radical chemistry, treatment of the allyl silane substituted β-hydroxycobaloxime 13 with pTSA led predominantly to the trans-disubstituted cyclopentane 14, which on irradiation with TEMPO produced 15. In a similar manner, the cobaloxime 18 was cyclised to 19 in the presence of pTSA which, on irradiation with a sunlamp then underwent radical mediated cyclisation to the substituted indane 20. |
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